Search: Herschel, John in addressee 
1820-1829::1826 in date 
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From:
Edward Sabine
To:
Sir John Herschel
Date:
[1826]
Source of text:
RS:HS 15.17
Summary:

Thanks JH and Charles Babbage for their paper on the magnetic experiments. Asks to have 20 extra copies of the paper on the rocket experiments made when it is printed. Speaks of travel expenses. Mentions [T. F.] Colby's opinions regarding the Spitzbergen measurements.

Contributor:
John Herschel Project
From:
Thomas Young
To:
Sir John Herschel
Date:
[1826 to 1829]
Source of text:
RS:HS 18.354
Summary:

Errors in equinoctial time calculated by John Pond. Suggests limiting decimal places in value of equinoctial time to reflect this uncertainty. Making error uniform will make it awkward to alter future almanacs.

Contributor:
John Herschel Project
From:
Thomas Young
To:
Sir John Herschel
Date:
[1826 to 1829]
Source of text:
RS:HS 18.356
Summary:

Resolved puzzle about sidereal year, which needs better definition. Error between true and nominal positions prevents TY adopting 'equinoctial time' for chronology investigations.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[1826-1]
Source of text:
RS:HS 17.324
Summary:

Comments on several experiments with spectra passing through glass films.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[4 January 1826]
Source of text:
RS:HS 17.257
Summary:

Asks JH about Dr. Balfour's account in Asiatic Researches about lunar effects on humans in India.

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[12 January 1826]
Source of text:
RS:HS 17.258
Summary:

Comments on use of muriate of lime on plants. Also on existence of unexplained bands on film and on presence of red light beyond normal spectrum with light originating from certain sources.

Contributor:
John Herschel Project
From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[18 January 1826]
Source of text:
RS:HS 13.420
Summary:

Responds to receipt of sample impression of GP's memoir [see GP's 1825-12-3]. Comments on printing and paying arrangements, and to whom copies are to be sent. Comments on value of using an equatorial telescope as opposed to a meridian circle. [Some parts of the letter are illegible.]

Contributor:
John Herschel Project
From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[28 January 1826]
Source of text:
RS:HS 13.421
Summary:

Writes to correct error JH identified in GP's memoir [see GP's 1826-1-18]. Also asks to have two additional passages added to improve memoir. Intends to come to England next winter. Is including a list of corrections for the memoir [list is missing].

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
28 January [1826?]
Source of text:
RS:HS 17.323
Summary:

Questions and comments regarding improvements in microscopy.

Contributor:
John Herschel Project
From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[1 February 1826]
Source of text:
unknown
Summary:

Discusses nebulae. Begs JH not to overwork himself. Hopes to live long enough to see JH marry; advises JH that if he can marry a 'good-natured, handsome, and sensible young lady, pray think of it, and do not wait till you are old and cross.'

Contributor:
John Herschel Project
From:
Edward Sabine
To:
Sir John Herschel
Date:
[1826-2]
Source of text:
RS:HS 15.15
Summary:

Encloses a copy of a letter from the astronomer [George] Fisher, who strongly supports the practicability of work in Spitzbergen. Says the letter will be presented to the Council for its consideration in hopes that a special committee will be appointed. Urges JH to show the members the copy.

Contributor:
John Herschel Project
From:
James Grahame
To:
Sir John Herschel
Date:
[15 February 1826]
Source of text:
RS:HS 8.336
Summary:

Of JG's journey north and the woman who nursed him back to health [letter completed 1826-2-16 at Wandsworth].

Contributor:
John Herschel Project
From:
Edward Sabine
To:
Sir John Herschel
Date:
[1826- 2-23 or later
Source of text:
RS:HS 15.16
Summary:

Claims 'it never entered [his] head' that an appointed committee would be influenced solely by the need to defend its decisions. Restates his opinion that the subject should be properly considered.

Contributor:
John Herschel Project
From:
James Grahame
To:
Sir John Herschel
Date:
[24 February 1826]
Source of text:
RS:HS 8.337
Summary:

About JG's fatigue on his return home.

Contributor:
John Herschel Project
From:
Henry John Temple
To:
Sir John Herschel
Date:
[27 February 1826]
Source of text:
RS:HS 17.344
Summary:

Hopes that JH will find a matter [the professorship at Cambridge] not 'incompatible with your [JH's] other avocations.'

Contributor:
John Herschel Project
From:
William Henry Fox Talbot
To:
Sir John Herschel
Date:
[27 February 1826]
Source of text:
RS:HS 17.259
Summary:

Comments on Josef Fraunhofer's work on double stars, on quality and color of light from different sources, refraction of different kinds of light, and solution of a problem in conic sections. Is going to Geneva and Modena soon.

Contributor:
John Herschel Project
From:
Giuseppe Piazzi
To:
Sir John Herschel
Date:
[1 March 1826]
Source of text:
RS:HS 13.396
Summary:

Asks for JH's assistance in the acquiring of some astronomical equipment.

Contributor:
John Herschel Project
From:
Francis Baily
To:
Sir John Herschel
Date:
[2 March 1826]
Source of text:
RS:HS 3.63
Summary:

Thanks for the loan of his paper on the parallax. Regarding Wilhelm Struve's paper.

Contributor:
John Herschel Project
From:
Johann Franz Encke
To:
Sir John Herschel
Date:
[2 March 1826]
Source of text:
RS:HS 7.84
Summary:

Berlin Academy plans a new Astronomical Chart. Thanks for JH's work on the double stars. Will see he has changed his address.

Contributor:
John Herschel Project
From:
Mario Gemmellaro
To:
Sir John Herschel
Date:
[6 March 1826]
Source of text:
RS:HS 8.93
Summary:

Has heard nothing from JH since he left the island. Would like to hear regarding the height of Etna and the latest comet.

Contributor:
John Herschel Project